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PlantFiles: Larkspur, Candle Delphinium
Delphinium elatum 'Black Knight'

 
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Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Delphinium (del-FIN-ee-um) (Info)
Species: elatum (el-AH-tum) (Info)
Cultivar: Black Knight

2 vendors have this plant for sale.

4 members have or want this plant for trade.

Category:
Perennials

Height:
36-48 in. (90-120 cm)

Spacing:
18-24 in. (45-60 cm)

Hardiness:
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)

Sun Exposure:
Full Sun

Danger:
All parts of plant are poisonous if ingested

Bloom Color:
Pink
Blue-Violet
Violet/Lavender
White/Near White

Bloom Time:
Mid Summer
Mid Fall

Foliage:
Herbaceous

Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
From herbaceous stem cuttings
Allow cut surface to callous over before planting
By air layering

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
Seed does not store well; sow as soon as possible

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By seadance
Thumbnail #1 of Delphinium elatum by seadance

By Songbird839
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By ladygardener1
Thumbnail #3 of Delphinium elatum by ladygardener1

By ladygardener1
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By mgarr
Thumbnail #5 of Delphinium elatum by mgarr

By ladygardener1
Thumbnail #6 of Delphinium elatum by ladygardener1

By ladygardener1
Thumbnail #7 of Delphinium elatum by ladygardener1

There are a total of 8 photos.
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Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorComment
Positive lmelling On Mar 27, 2005, lmelling from Ithaca, NY (Zone 5b) wrote:

Beautiful and impressive delphinium from the "Pacific Giant" line. Deep blue with a black eye. Mature blooms can be harvested and dried for use in fall arrangements and add a particularly colorful touch (air dry upsidedown).

Plants are generally short-lived, needing to be replaced about every 3 years - but well worth it.. If first flush blossoms are harvested, the plant will rebloom.

Regional...

This plant has been said to grow in the following regions:

Albion, Pennsylvania
Johnsonburg, Pennsylvania
Murfreesboro, Tennessee
Kalama, Washington



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